Lock for manifolds.



W. G. EMPEY (iz D. L. CHILDS.

LOCK FOR MANIFOLDS.

APPLICATION FILED JULY 3, 1912,

Patented Apr. 29, 1913.

mmzaaw inder 10 being rotated one complete 1'&VOlL1- tion either in opening or closing the valve thus permitting the key 14 being Withdrawn from the lock cylinder when the valve is either opened or closed, by reason of the pockets 11 in the lock cylinder 10 registering with the pockets 1?) in the lock casing 41:, when the valve 2 is disposed in either its extreme open or closed position From the foregoing it Will be that when the key 14 is inserted in the lock cylinder 10 to either open or close the valve 2, that the lock cylinder Will be rotated threefourths of a revolution before the pin 9 comes into engagement with the boss 8; the

continued moven'ient of the lock cylinder 10 being snflicient to rotate the valve stem one-fourth of a revolution. The movement of the valve stem 3 in either direction is limited by means of the stop 7 engaging the ends of the slot or groove 5 formed in the flange 5 on the end of the valve stem As a means for facilitating the assembling of theparts, the valve stem 3 is formed with. an otlset flat side which receives the valve 2; the latter being inserted in the end of the manifold after the stem 3 has been. placed in position, and attached to the stem by means of a screw 16. In placing the stem 3 in position, the lock cylinder is moved, and the stem is inserted in a perforation 17, formed in the lock casing and the Wall of the n1ani fold; the inner end of the stem extending into a pocket 18 formed in the inner Wall of the manifold at a point opposite the per fOl'tlElOll 17. The inner end of the lock cylinder 10 is covered with a plate 19 on which the pin 9 is formed; the plate 19 serving as a shield to cover the inner end of the keyway 15, and thereby preventing the escape through the heywey of such gas as may leak. into the lock casing around the valve stem 3. Having thus described our invention, what We elaiin and desire to secure by Letters Patent, is t T 1e combination with a conduit, of a key operated cylinder, a pin on said cylinder, a valve stem, avalve on said stem withinthe conduit, a boss carried by said valve stem adapted to be engaged by the pin on the cylinder when the latter is rotated to revolve the valve stem, and a stop for limiting the rotation of the valve stem, said valve stem being locked in position between said pin and said stop when said valve stem has been moved to the limit of its movement in either directioi'i.

In testimony whereof We have hereunto the presence of two sub set our hands in scribing Witnesses.

'WILLIAM C. EMPEY. ,DENIS L. CHILDS.

l Vitnesses: I

Lewis W. VAN WIOKLEN, HARRY GIBBONS. 

